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2019+ BMW 3 AND 4-SERIES FORUMS (G2x Generation) General G20 Sedan / G22 Coupe / G26 Gran Coupe Discussions April 2020 C&D M340i Review

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      05-01-2020, 05:36 PM   #23
Burrcold
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Quote:
Originally Posted by upsidedownfunnel View Post
I meant maybe they were winter runflats instead of the Pilot Sport 4S tires. Many people who are OK with driving on go-flats in the summer prefer not to rely on just a fix-a-flat in the winter and go with runflat winter tires.
Ah gotcha.
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      05-01-2020, 09:53 PM   #24
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Quote:
Originally Posted by RedKloud View Post
Every car has its Pros and Cons, but if you are looking for a sport sedan, it's difficult to find a more balanced and well rounded car at this price point.
I’m coming from three M3’s. The M340 is a ridiculously good car. The best car BMW has put out in years.

Some obvious cost cutting in the interior, but that’s across all models.
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      05-01-2020, 10:01 PM   #25
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Quote:
Originally Posted by Burrcold View Post
There's members here running sub 4 second 0 to 60 already (stock). 3.5 would have to be the perfect conditions, but it's definitely realistic.
I have not timed my car... but I will tell you this car is quite a bit faster than my 2017 competition pack M3. I have RWD with non run flats. It’s a problem on the highway and I’m not joking. You look down and get the 100 mph surprise.

I mentioned this on the M forum and they got their panties up in a bun.

😎
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      05-02-2020, 01:18 AM   #26
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Quote:
Originally Posted by NewM3driver View Post
I have not timed my car... but I will tell you this car is quite a bit faster than my 2017 competition pack M3. I have RWD with non run flats. It’s a problem on the highway and I’m not joking. You look down and get the 100 mph surprise.

I mentioned this on the M forum and they got their panties up in a bun.

😎
Oh man, no question.

This became worse after putting this car on Michelin Pilot Sport 4S tires. Its pretty nutty
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      05-02-2020, 07:03 AM   #27
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3.5 is super fast! I feel like my f80 tuned was faster than my m340i. I must be spoiled cause i don't think the m340i is 3.5 fast but it must be!
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      05-05-2020, 05:56 AM   #28
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Quote:
Originally Posted by wtwo3 View Post
Interestingly, this SAME reviewer said in a previous review:

"On the street, the adaptive dampers provide a smooth ride over the open road yet can firm up nicely when the pavement begins to twist into the shape of a rattlesnake."

https://www.caranddriver.com/reviews...y-maintenance/
They're different cars - AWD vs RWD. Could very well be the the AWD suspension is not tuned as well (extra weight etc).
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      05-05-2020, 05:59 AM   #29
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Quote:
Originally Posted by fueledbymetal View Post
They're different cars - AWD vs RWD. Could very well be the the AWD suspension is not tuned as well (extra weight etc).
I've driven both (with adaptive suspension) and they're virtually identical driving.
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      05-07-2020, 05:12 PM   #30
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I came to my M340i from an LCI F10 535i M Sport on 19” non-RFT, that I quite loved. Initially, I described the M340i suspension as “stiff” but a short adjustment period later, I now describe the M340 suspension as “firm”. I think it is not just semantics and there is a difference between those terms and “firm” suspension helps makes this car as good as it is.
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      05-24-2020, 12:32 AM   #31
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Quote:
Originally Posted by Burrcold View Post
Quote:
Originally Posted by wtwo3 View Post
Interestingly, this SAME reviewer said in a previous review:

"On the street, the adaptive dampers provide a smooth ride over the open road yet can firm up nicely when the pavement begins to twist into the shape of a rattlesnake."

https://www.caranddriver.com/reviews...y-maintenance/
That's really funny that it's the same reviewer...you should send a note to C&D hahah
I wonder if the ride harshness was from the winter tires... run flats? The first (and last) set ofRFT I had were like the tires on the a Flintstone mobile
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      10-22-2020, 02:38 AM   #32
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Question M340i ride is firm -- Tires with better ride comfort?

I got my 2021 M340 xDrive a month ago. It came with 19" wheels and 225/40R19H Pirelli P7 runflat tires. Yes, it is very firm, not quite "harsh," but too firm for my taste. That's even in Comfort mode. It is equipped with Adaptive Suspension. The M340i is a notch firmer than my 2019 440i (F36), which also is an xDrive with Adaptive Suspension. On both cars, I had the runflat tires removed and replaced with Bridgestone Potenza RE980 all season tires, hoping to smooth the ride out significantly. It made almost no difference. However, the 440i is definitely smoother.

I think the M340i may have gotten even got firmer with the Potenza RE980s, due to the stiffer sidewalls of a "W" speed-rated tire. The "H" speed-rated Pirelli P7 Runflats were not great, though. (I'm surprised to see only an "H" speed rating, which is not to be driven faster than 139mph, on a car that has a nominal top speed of 155mph -- what's up with that, BMW?)

On a smooth roadway, of course, a firm ride doesn't matter much at all. It would be fine if you could always avoid rough roads and speed bumps and potholes, but this isn't Japan or Germany. It's the US of A, land of the pickup truck, endless roads, temperature extremes, and urban decay. I can't replace the shocks (even if there were something softer available), especially on a lease. I could get a set of 18" wheels & tires, but it seems ridiculous to spend around $3K just for that.

I want to try switching the tires again on 30-day warranty to a softer riding tire. Based on Tire Rack user reviews for Ultra High-Performance All-Season, it looks like a close match between Michelin Pilot Sport A/S 3+, Goodyear Eagle Exhilerate, and Continental ExtremeContact DWS06, all 8.5/10 for Comfort. But the Bridgestone Potenza RE980 is rated at 8.2, so maybe it's hardly worth it. For Summer UHP tires, however, the Michelin Pilot Sport 4S is at 9.0, and the Continental ExtremeContact Sport is at 8.7.

Any strong recommendations for comfortable tires from other M340i owners?

Last edited by Korokoro; 10-22-2020 at 02:43 AM.. Reason: Clarity
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      10-22-2020, 05:37 AM   #33
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I’m looking forward responses on this question. Comfort isn’t my first priority but I am interested in responses about those same UHP all season tires. Midwest driving is such a mixed bag with all four seasons and the constant drought to monsoon swings on both new and decaying roadways.

In another thread I asked about the Goodyear Eagle Exhilarate and received only one response which was generally favorable, but maybe a little too much road noise for the poster.
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      10-22-2020, 06:08 AM   #34
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Quote:
Originally Posted by Korokoro View Post
The "H" speed-rated Pirelli P7 Runflats were not great, though. (I'm surprised to see only an "H" speed rating, which is not to be driven faster than 139mph, on a car that has a nominal top speed of 155mph -- what's up with that, BMW?)
You'll hit the limiter well before you get anywhere near 155 mph. Ask me how I know

In hindsight I should have ordered my car without the runflats. Should have gotten the staggered high performance non-runflat setup, and with adaptive suspension. Oh well.... There's always next time....
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      10-22-2020, 07:34 AM   #35
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Quote:
Originally Posted by themnmd View Post
My M340 is one of best cars I have owned. My critique would be sport plus is not stiff enough and more power! Very smooth ride, doing 80+ on highway is easy if you don't pay attention
+1
I'd say my AWD with adaptive in comfort mode is very 'comfortable', wouldn't class it as stiff at all. I usually drive in sport mode which is firm'ish but I'd still like it firmer, and lower. Looking at getting the ACS lowering springs which should firm it up slightly.
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      10-22-2020, 09:30 AM   #36
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Quote:
Originally Posted by Ikester19 View Post
Quote:
Originally Posted by themnmd View Post
My M340 is one of best cars I have owned. My critique would be sport plus is not stiff enough and more power! Very smooth ride, doing 80+ on highway is easy if you don't pay attention
+1
I'd say my AWD with adaptive in comfort mode is very 'comfortable', wouldn't class it as stiff at all. I usually drive in sport mode which is firm'ish but I'd still like it firmer, and lower. Looking at getting the ACS lowering springs which should firm it up slightly.
Sharper handling and faster , that would be a M3
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      10-22-2020, 01:56 PM   #37
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I would never take a performance vehicle with runflats. It cripples the car.

My M340i was ordered with the tire/oil performance package. If it wasn't, I'd have immediately put new NRF shoes on it after delivery.
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